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...spots were chosen for a very good reason. Despite the caps of ice in Mars' polar regions and the deposits of ice thought to lie beneath the soil, the planet is a desiccated place. But that doesn't mean Mars wasn't once wet, and its topography - scarred with what appear to be ancient river channels and dry seabed - suggests that the planet once fairly sloshed with water. If you want to find signs of ancient life, the key is to follow that water - or at least the places it used...
...Even in the Holocaust, the lesson is "Never Again." But this doesn't mean just never again can genocide be allowed to happen to the Jews, but never again can genocide be allowed to happen to any human being. So, the Holocaust is not just mine; it belongs to all of humanity...
Without the unerring measurement provided by atomic clocks, we couldn't have landed a rover on Mars, the Internet wouldn't be able to process data superfast and GPS navigation would be a fantasy. These clocks are so precise that they literally redefined time: Once tied to the mean solar day, the official measure of a second was changed in 1967 to refer to the duration of more than nine billion periods of radiation between two levels of the cesium 133 atom...
...instance, will receive a signal from a cell-phone base station, many of which often rely on commercially available rubidium atomic clocks. But if you would like to witness the leap second pass with your own eyes, log on to NIST's Web clock shortly before midnight Greenwich Mean Time, and watch as 23:59:59 changes to 23:59:60, a feat that only NIST's clock can achieve...
...chief of the Administration Agency for Radio, Television and Electronics Information at the Ministry of Information and Communications defends the new regulations. "Every country has its own law and all activities must follow its laws in order to guarantee the social benefits," Luu says. It "does not mean to censor blogs, but to help and to educate the bloggers to maintain a healthy way of using Internet for their benefits...